Derivatives (Pre-tax Gains and Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Commodity | Cost of sales and merchandising revenues
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) on derivatives instruments recognized in earnings	$ 166,985	$ 30,960
Not Designated as Hedging Instrument | Interest rate contracts | Operating, administrative and general expenses
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) on derivatives instruments recognized in earnings	354	(784)
Designated as Hedging Instrument | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate derivative losses included in Other comprehensive income (loss)	(12,947)	(18,182)
Designated as Hedging Instrument | Interest rate contracts | Operating, administrative and general expenses
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate derivatives losses included in Interest income (expense), net	$ (1,618)	$ (1,290)